2198272728 has 32 divisors (see below), whose sum is σ = 5629725360. Its totient is φ = 714885120.

The previous prime is 2198272721. The next prime is 2198272759. The reversal of 2198272728 is 8272728912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198272721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1116025 + ... + 1117992.

Almost surely, 2^2198272728 is an apocalyptic number.

It is an amenable number.

2198272728 is an abundant number, since it is smaller than the sum of its proper divisors (3431452632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2198272728 is a wasteful number, since it uses less digits than its factorization.

2198272728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234067 (or 2234063 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 2198272728 is about 46885.7412013503. The cubic root of 2198272728 is about 1300.2509827050.

The spelling of 2198272728 in words is "two billion, one hundred ninety-eight million, two hundred seventy-two thousand, seven hundred twenty-eight".